Manchester United staff were left somewhat surprised by how Amad Diallo got on during his time out on loan last season. Amad Diallo, of course, has rightly received a lot of praise after scoring the winning goal at the end of that incredible FA Cup tie between Manchester United and Liverpool before the international break. Amad was sent off for a second yellow card after removing his shirt while celebrating the goal. But it seems safe to say that the 21-year-old has secured his place in United folklore with the winner. It has been a frustrating season for the Ivory Coast international. Gary Ne…